考研英语长难句精选解析突破However, whether such a sense of fairness evolved independently in capuchins and humans, or whether it stems from the common ancestor that the species had 35 million years ago, is, as yet, an unanswered question.词汇突破capuchin kpjtn（天主教的）圣方济会托钵僧；卷尾猴，僧帽猴stem stemn. 茎，干；（高脚酒杯的）柄脚；词干；主干；船头；血统v. 阻止，遏制；止住（液体的流动）；起源于；去梗，去柄；（船）逆流而行；给装柄结构分析本句中由 or 连接的两个 whether 引导的并列的主语从句，后接系表结构 is an unanswered question。在第二个主语从句中有一个 that 引导的定语从句修饰 the common ancestor。However 是转折连词，as yet 是插入语。However, when two monkeys were placed in separate but adjoining chambers, so that each could observe what the other was getting in return for its rock, their behaviour became markedly different.词汇突破adjoin dn v. （建筑、房间或土地等）毗邻，连接chamber temb(r) n. 房间，室；会议厅，会所；议院；腔，膛；洞穴v. 把子弹送入弹膛；把关在房间里adj. 室内的；私人的，秘密的结构分析此句的主干结构是：their behaviour became markedly different。在 when 引导的时间状语从句中又插入 so that 引导的目的状语从句，在目的状语从句中又套用了 what 引导的宾语从句。Such behaviour is regarded as “all too human”, with the underlying assumption that other animals would not be capable of this finely developed sense of grievance.词汇突破underlying ndla adj. 潜在的；根本的；在下面的；优先的v. 放在的下面；为的基础；优先于（underlie的ing形式）capable kepb()l adj. 有能力的；有才干的；容许的；可以做（某事）的；综合性的；有资格的grievance rivns n. 不满，不平；委屈；冤情结构分析句子的主干 Such behaviour is regarded as “all too human”，with the underlying assumption 是介词结构作状语，表示伴随。其中 assumption 后面接一个以 that 引导的同位语从句解释说明 assumption 的内容。